Do not even dare to choose the 32 bit option as it would not let you install Mac on Windows
Choose the type as Mac OS X Server (64-bit).Now launch VirtualBox program, and click on New button on the upper left corner to create a virtual machine on your Windows machine and give it a name.And you need, install its Extension Pack also First thing you need to do is setup your Windows machine to host Macintosh OS.I have used HackBoot1 to get to the screen with the HackBoot icon in middle. I created OSX Virtual Machine (Mac OS X). Right now, using a distro is the only practical method for getting Mac OS X Lion to run a virtual machine in Windows.I have also downloaded HackBoot1.iso & HackBoot2.iso, and MultiBeast - Mountain Lion Ed. For the unacquainted, distros are pirated copies of Mac OS X that have been modified to work with normal computers. LATEST UPDATE (July 31, 2012): Check out our guide to installing OS X Mountain Lion in Virtualbox. And the image file of macOS X Yosemite is uploaded on Google Drive. Which voluntarily you can install it on VMware or VirtualBox. Therefore, the file is completely compressed with Winrar and 7Zip. The image file of macOS X Yosemite is created only to install in VMware and VirtualBox. Download macOS X Yosemite 10.10 Image for VMware & VirtualBox. Boot the VM with el-capitan-rescue.iso (or any other MacOS / OS X.iso) Important: if you boot with the wrong settings or disc and it doesn't work, delete the VM and start over. Named EXACTLY 'OS X El Capitan' Dynamically. And set the operating system to “Mac OS X Server.
Select your OS X machine in VirtualBox’s left sidebar and click the Start button in the toolbar.